Virginity as torture:
"Teach me, O, please teach me," she started in again, "I want to be like you. I’ll do anything you tell me. Promise me you’ll take me with you when you go back to that place Jacqueline told me about."
"You’re too young," O said.
"No, I’m not too young, I’m fifteen going on sixteen," she cried out angrily. "I’m not too young. Ask Sir Stephen," she said, for he had just entered the room.
Natalie was granted permission to remain with O, and extracted the promise that she would be taken to Roissy. But Sir Stephen forbade O to teach her the least caress, not even a kiss on the lips, and also gave strict instructions that O was not to allow Natalie to kiss her. He had every intention of having her reach Roissy completely untouched by hands or lips. By way of compensation, what he did demand, since Natalie was loath to leave O, was that she not leave her a single moment, that she witness O caressing both Jacqueline and himself, that she be present when O yielded to him and when he whipped her, or when she was flogged by old Norah. The kisses with which O smothered her sister, O’s mouth glued to her, made Natalie quiver with jealousy and hate. But glowering on the carpet in the alcove, at the foot of O’s bed, like little Dinarzade at the foot of Scheherazade’s bed, she watched each time that O, tied to the wooden balustrade, writhed and squirmed beneath the riding crop, saw O on her knees humbly receiving Sir Stephen’s massive upright sex in her mouth, saw her, prostrate, spread her own buttocks with both hands to offer him the after passage - she witnessed all these things with no other feelings but those of admiration, envy, and impatience.